stegemann



4 Sheets-Sheet 1.

(No Model.)

A. STEGEMANN. MAGAZINE PLATE HULDBR.

Patented May 1, 1894.

(No Model.) 4 Sheets-Sheet2.

A. STEGEMANN. MAGAZINE PLATE HOLDER.

No. 519,276. Patented May 1l 1894. f9.2 lM- 'g Zig/.

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A. STEGEMANN.

MAGAZINE PLATE HOLDER.

No. 519,276. Patented May 1,1894.

'Iy/Z Ey. /i T1915 (No Model.)

4 Sheetsv-Sheet 4. A. STEGEMANN.

' MAGAZINE PLATE HOLDER. No. 519,276. Patented May 1, 1894.

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` a front view of the changing box.

UNITED STATES PATENT OFFICE.

AUGUST srEGEMANN, or BERLTN, GERMANY.

MAGAZIN E PLATE-HOLDER.

SPECIFICATION forming part of Letters Patent No. 519,276, dated May 1,1894.

Application tiled December 29, 1892. Serial No. 456.702. (No model.)

To a/ZZ whom it may concern:

Be it known that I, AUGUsr STEGEMANN, a subject of the King of Prussia,and a resident of Berlin, Germany, have invented certain new and usefulImprovements in Magazine Plate-Holders, of which the following is aspecification, reference being had to the accompanying drawings.

My invention relates to a changing box for photographic cameras, whichis arranged in combination with a case designed for depositing theexposed plates. After every photographic exposure this depositing caseis fixed to one side of the changing box. In the adjoining walls are twoslots ordinarily closed by slides, so that the exposed plate, when thetwo slides are in the proper position, can slide from the changing boxto the depositing case. The slide may be actuated either by hand throughthe medium of a special mechanism or automatically. In order that thesliding of the plate may take place after uncovering the slots, themechanisms provided on the two receptacles, when the latter are puttogether, set free the foremost exposed plate and separate it from theothers, so that :it can drop into the depositing case. The tworeceptacles are in this instance so close together that during thesliding movement no rays of light can fall upon the plates. If then, thedepositing case is removed from the box, after theslots have been closedagain by the slides, the next plate is automatically put in the properposition in the box for the fresh exposure.

In the accompanying drawings Figure 1 is Fig. 2 is a side view of thesame. Fig. 3 is a transverse section on the line I-I of Fig. 1 with thefollower p drawn back. Fig. .tshows the interior of the changing boxwith the front removed. Fig. 5 is a similar transverse section as Fig. 3but with the follower p released. Fig. 6 is a transverse section on theline II-II of Fig. 5. Fig. 7 is a view of the sliding wall of thechanging box. Fig. 8 shows a front view of the changing box with thedepositing case attached thereto. Figs. 9 and 10 represent side views ofthe changing box and the upper part of the depositing case in two`positions in order to show the lever mechanism for actuating the slideshaft.

Figs. 11 and 12 represent sections through the sides of both receptacleson the line III- III of Fig. 8 showing the releasing mechanism. Fig. 13shows the disengaging rod h 1n detail. Figs. 14. and 15 representsections on the line IV-IV of Fig. 8 showing in two positions thelocking device for holding the two receptacles together. Fig. 16 shows alongitudinal section of the changing box with the depositing casesecured thereto. Figs. 17 and 18 are sections on the broken line V VIVII VIII of Fig. 16 of the box in two positions to show the devices fordisengaging the slides. Fig. 19 is a transverse section taken upon theline IX-IX of Fig. 16. Figs. 20 and 21 show the slide wall of thedepositing case with the slide in the two terminal positions. Figs. 22and 23 show parts of Figs. 16 and 18 upon a larger scale.

The changing box A, Figs. 1 to 7 is slid in the customary manner into asuitable guide on the rear wall of the photographic camera.

On its front are inserted the sliding cover h and the glass plate c.Behind these are placed the plates c to be exposed. The sliding cover isnot quite drawn out during thev exposure,

as shown in Fig. 5, but in order that it may not protrude laterally itis adapted for turning at b by means of hinges. The rear wall d of thechanging box is formed by the door,

after the opening of which the plates c are AThe edges 3 do not quitereach the plate c;

through the intermediate space 4, Figs. 3 and 5, the foremost plate,after the exposure has taken place, can slide along the glass plate andthrough the slot 5 in the wall of the changing box to leave the latter.The slot 5 is closed by a slided Fig. 7, which is guided on the outsideof the box by the plates 35.

In the changing box is arranged a spring follower p which presses theplates e forward against the glass plate c. It is fixed by hinge flaps 6or similar means upon the rear wall or door a and is forced by one ormore springs against the plates e. On opening the door a, when newplates are to be put in, the

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follower p is pulled back and held against the rear wall, as shown inFig. 3. For this purpose it is connected with a cord 7 which passes oversmall pulleys arranged in the rear wall and extends to the end of thelever S, Figs. 1 and 4t. This lever S turns upon the pivot 9 on theinside of the door a. The cord 7 is preferably concealed in the groove aso that the spring follower p may be drawn close to the rear wall. Thistakes place by turning the lever 10 fixed upon the same pivot 9 as thelever 8 but on the outside of the rear wall ci Fig. 1. Above the pivot 9is arranged a spiral spring mechanism 1a which acts in opposition to thepull of the spring 5 and always keeps the cord 7 stretched tight. Newwhen the lever 10 is turned from the position indicated by dotted linesin the direction of the arrow tothe position shown in full lines thelever 8 on the inside of the door a passes from the position shown infull lines in Fig. t to the position indicated in dotted lines, the cord7 being pulled and the follower p turned back from the position Fig. 5to the position Fig. 3. In order that the follower p may not of itselfdart forward I provide a locking device 11 which retains the level'10'in the position Fig. 1. /Vhen the plates c have been putin the boxand the door a has been closed thelocking device 11 is disengagedwhereupon the follower p moves forward and presses against the plates e.In proportion as the plates e are used the follower p moves forwardunder the pressure of' the springs, the levers 8 and 10 turninggradually in the opposite direction to that of the arrow indicated inFigs. 1 and 4. The ex tent of the turning movement of the lever 10 mayserve for counting the finished plates, and for this purpose a graduatedsector is provided as shown by Fig. 1.

After each exposure the depositing case B is fixed to the changing box Aas shown in Figs. 9 to 15. Both receptacles are connected by hinges withone edge of the sliding walls to be fixed together. These edges areprovided with stripsf and f which engage with each other like hooks. Thetwo are hooked together and then serve as a hinge. But these hookedstrips may also be dispensed with or replaced by other devices, theyhave chiefiy for their object to facilitate the proper fitting togetherofthe two receptacles. Vhen the two receptacles are joined in theaforesaid manner they are held together by alocking device thearrangement of which is shown in Figs. 9 to 15. On both sides of thedepositing case B are arranged the metallic plates 14 extending withtheir upper bent extremities over the sides of the box, they aremoreover provided with small holes 15 into which take the spring pins 16arranged on the box, thereby uniting the two receptacles. The springpins 16 are in the casing g, Figs. 14 and 15 and are connected by lazytongs 17, the spring 19 forces the pins 16 outward. Nith one of the saidpins is connected the knob 18; by

forcing this knob back the two pins recede. In this manner the lockingdev1ce is disengaged, and the depositing case B can then be taken offagain.

In the adjoining walls of the two i-ecepta; cles are the two sheet metalslides d and d adapted to be displaced with their narrow edges betweenthe guide plates 3o, 3e. In the position shownin Figs. 7 and 2O theslides cover the slots 5 in the changing box and 2G in the depositingcase. j Ordinarily the slides are in the locked position, wherein theyare kept by locking devices as hereinafter described. .Vhen the tworeceptacles are joined Figs. 9 to 12 one lies exactly upon the other.One slide is moreover provided with pins 22, 22, Fig. 7, which when thetwo receptacles are joined fit into suitable holes 12, 12, in the otherslide Fig. 20. The pins couple as `it were the two slides with eachother, so that when one slide is displaced the other is earried away. Inlieu of the coupling pieces any other suitable means may be employed forfulfilling the saine object.

For enabling the foremost plate immediately behindthe glass plate c tofall after the exposure through the coinciding slots 5 and 2G when theslides have been pushed back it must be loosened from the other plates,that is to say, set free; for during the exposure the foremost plate cis firmly held in its position by the pressure of the plates behind andof the follower p. To permit the plate tofall after the exposure, Iprovide four noses `i adjustable in the walls of the box by means ofspring levers t' Figs. 9 to 12, and 16 to 18.- 1 he movement of thelevers t' takes place by the displacement of the spring rods 7i arrangedin the sides of the box Figs. 11 and 12; when pressure is brought tobear upon thecase li the metallic plates 14 press with their edgeagainst the protruding noses 7L of these rods h and push them a littleinto the box in op position to the action of the springs 19. Under thesecircumstances the noses t are first so forced by the projections 7b2 ofsuitable shape on the rods 7i, toward the interior of the box that theypass in the direction of the arrows 20 indicated Figs. 1G and 19 betweenthe two foremost plates; at the same time the levers t' are turned fromthe position Figzll to the position Fig. 12, their noses e" forcing backall the plates behind the foremost plate e in the direction of thearrows 21, Fig. 19, so that pressure will no longer be exerted upon theforemost plate; the latter can then drop through the opening 4 and slots5 and 2G Fig. 1S. The opening and closing of the slides must of courseonly take place when the two receptacles are joined because light wouldotherwise enter the receptacles through the slots 5 and 26. For thisreason the slides are connected with locking devices so ar ranged thaton the two receptacles being joined they will be automaticallydisengaged. The locking of the two slides may for instance take place inthe manner shown in YOO IIO

Figs. 17 and 23. I-Iere the locking springs 27 are on both sides 0f theslides below the guide plates 35 and serve for locking the noses 28 ofthe slides Figs. 22 and 23. The disengagement of these locking springstakes place by the pins 29- on the guide plates 35 which when thereceptacles are joined pass through openings 30 in the opposite plateand press against the springs 27, Figs. 18, and 23,

thereby disengaging the slides.

The displacement of the slides d, d is effected by means of the shaft 23placed below the slide d in the depositing lcase Band having tootheddevices 24 which engage wit-h the teeth provided on the under side ofthe slide cl. The shaft is operated either through the medium of a crankby hand or through the medium of a mechanism automatically, ashereinafter described. As the slide dcarries away the slide d the twopass simultaneously from the position Fig. 17 to that of Fig. 18,whereupon the plate used drops through the uncovered slot 26 into thedepositing case B. Vhen the exposed plate has been conveyed to thedepositing case B in the described manner the shaft 23 must be turnedback again in order to close the slides,which takes place by hand orautomatically by means of the mechanism to be described. Pressure isexerted upon the knob 13, and the two receptacles are taken apart again.Then the devices for locking the slides d d are automatically engagedagain, so that these slides will be securelykept in their lockedposition. As moreover the noses h are also released the noses t', whichhave liberated the foremost plate e and retained the others, move backand the spring-follower p forces a new plate e against the plate c sothat a fresh exposure can take place.

The displacement of the slides d d is by preference effectedautomatically like the other movements which take place when thedepositing case B is joined to the box and removed. Such a device isillustrated in Figs. 9, 10, 16, and 22. With the shaft 23 are connected,on both sides of t-he case B, mechanisms consisting of a kind of cranklink 33 which has its fulcrum at 32 and is actuated by the lever 3l.When the case B is put in its place the noses 3ft on the box A forcethese levers 3l, 3l back, thereby turning the shaft 23 and displacingthe slides. The two positions are shown in` Figs. 9 and 10. The returnmovement of the slides on the removal of the case B takes place by thespring 13, Figs. 16 and 22. The levers are suitably covered over by theplate 14.

If the shaft 23 is to be actuated by hand the levers and the spring 13connected with it are dispensed with and in lieu thereof it receivesasmall crank or turning knob. Of course the turning by hand may belikewise effected only after the slides are disengaged,

that is to say when the two receptacles are joined.

In order that in the opening of the slides no light shall pass throughthe slots 5 and 26 into the receptacles, a protecting strip l isprovided with covers for the opening between the two receptacles as soonas the slides commence their movement.

Vhat I claim is- 1. In an apparatus for exposing and transferringplates, the combination with a changing box A, of a case B for thereception of the plates after exposure, said changing box and oase beingdetachably connected together, a suitable locking device, slide forclosing the adjacent ends of said box and case, and mechanism, suchsubstantially as described, for automatically closing said slides whenthe box and case are disengaged, for the purpose specified.

2. The combination with the changing-box A of a spring-pressed followerfor holding the plates against the transparent front of the box, leversi', having noses -t, adapted to enter between the two foremost platesand press the rearward plates backward, springrods h, 7i, having noses7i', h', for actuating said levers and a case B connected to thechanging-box A and having metallic plates 11, adapted to press the saidnoses h', when said case is brought into position to receive the exposedplates, substantially as described.

3. The combination with a changing-box A and case B, of slides d and cl,the latter being provided with holes 12, and the former having pins 22,the pivotally connected levers 31, 33, the latter having fulcrums 32,the shaft 23 having toothed wheels engaging teeth on the slides, and thenoses 34E on the changing-box A, substantially as described.

4:. The combination with the changing box A, of the spring-plate p, acord 7 connected to said plate, an arm 8 to which the cord is led overguide pulleys, a lever arm 10 upon which the arm Sis rigidly mounted, alocking device for the lever arm 10, and a spring operating, and aspring acting in opposition to 'the spring plate 19 to keep the cord 7taut,

substantially as described.

5. The combination with the changing-box A, of the spring-plate p, thecord or chain 7, the lever 8 to which said cord is led overguidepulleys, a lever-arm 10 upon which the aim 8 is rigidly mounted, alocking device for the lever-arm l0, and a graduated sector over whichsaid lever arm moves, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

AUGUST STEGEMANN. Witnesses:

A. SIEBER, W. HAUPT.

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